//MIT License
//
//Copyright(c) 2020 Goodman Tao
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files(the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions :
//
//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.


#include "ComponentDecorator.h"

typedef struct
{
	IComponentVisual *pComponent;
} Fld;

static void Decorate(void *_pThis, va_list *pvlArgs)
{
	ComponentDecorator *pThis = _pThis;

	IComponentVisual *pComponent = va_arg(*pvlArgs, IComponentVisual *);

	Fld *pFld = pThis->Fld;

	pFld->pComponent = pComponent;
}

__OVERRIDE static void Display(void *_pThis, va_list *pvlArgs)
{
	ComponentDecorator *pThis = _pThis;

	Fld *pFld = pThis->Fld;
	
	pFld->pComponent->Call(pFld->pComponent, "Display");
}

static void Clear(void *pParams)
{
	ComponentDecorator *pThis = pParams;

	Fld *pFld = pThis->Fld;
	pFld->pComponent->Destroy(pFld->pComponent);
}

__CONSTRUCTOR(ComponentDecorator)
{
	return __Inst(__TYPE(ComponentDecorator), sizeof(Fld), Clear, 2, 1,
		__METHOD(Decorate),
		__METHOD(Display),
		__INHERIT(IComponentVisual));
}
